/
selection.js
2224 lines (1853 loc) · 73 KB
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selection.js
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/**
* @license Copyright (c) 2003-2014, CKSource - Frederico Knabben. All rights reserved.
* For licensing, see LICENSE.md or http://ckeditor.com/license
*/
( function() {
// #### checkSelectionChange : START
// The selection change check basically saves the element parent tree of
// the current node and check it on successive requests. If there is any
// change on the tree, then the selectionChange event gets fired.
function checkSelectionChange() {
// A possibly available fake-selection.
var sel = this._.fakeSelection,
realSel;
if ( sel ) {
realSel = this.getSelection( 1 );
// If real (not locked/stored) selection was moved from hidden container,
// then the fake-selection must be invalidated.
if ( !realSel || !realSel.isHidden() ) {
// Remove the cache from fake-selection references in use elsewhere.
sel.reset();
// Have the code using the native selection.
sel = 0;
}
}
// If not fake-selection is available then get the native selection.
if ( !sel ) {
sel = realSel || this.getSelection( 1 );
// Editor may have no selection at all.
if ( !sel || sel.getType() == CKEDITOR.SELECTION_NONE )
return;
}
this.fire( 'selectionCheck', sel );
var currentPath = this.elementPath();
if ( !currentPath.compare( this._.selectionPreviousPath ) ) {
// Cache the active element, which we'll eventually lose on Webkit.
if ( CKEDITOR.env.webkit )
this._.previousActive = this.document.getActive();
this._.selectionPreviousPath = currentPath;
this.fire( 'selectionChange', { selection: sel, path: currentPath } );
}
}
var checkSelectionChangeTimer, checkSelectionChangeTimeoutPending;
function checkSelectionChangeTimeout() {
// Firing the "OnSelectionChange" event on every key press started to
// be too slow. This function guarantees that there will be at least
// 200ms delay between selection checks.
checkSelectionChangeTimeoutPending = true;
if ( checkSelectionChangeTimer )
return;
checkSelectionChangeTimeoutExec.call( this );
checkSelectionChangeTimer = CKEDITOR.tools.setTimeout( checkSelectionChangeTimeoutExec, 200, this );
}
function checkSelectionChangeTimeoutExec() {
checkSelectionChangeTimer = null;
if ( checkSelectionChangeTimeoutPending ) {
// Call this with a timeout so the browser properly moves the
// selection after the mouseup. It happened that the selection was
// being moved after the mouseup when clicking inside selected text
// with Firefox.
CKEDITOR.tools.setTimeout( checkSelectionChange, 0, this );
checkSelectionChangeTimeoutPending = false;
}
}
// #### checkSelectionChange : END
var isVisible = CKEDITOR.dom.walker.invisible( 1 );
function rangeRequiresFix( range ) {
function isTextCt( node, isAtEnd ) {
if ( !node || node.type == CKEDITOR.NODE_TEXT )
return false;
var testRng = range.clone();
return testRng[ 'moveToElementEdit' + ( isAtEnd ? 'End' : 'Start' ) ]( node );
}
// Range root must be the editable element, it's to avoid creating filler char
// on any temporary internal selection.
if ( !( range.root instanceof CKEDITOR.editable ) )
return false;
var ct = range.startContainer;
var previous = range.getPreviousNode( isVisible, null, ct ),
next = range.getNextNode( isVisible, null, ct );
// Any adjacent text container may absorb the cursor, e.g.
// <p><strong>text</strong>^foo</p>
// <p>foo^<strong>text</strong></p>
// <div>^<p>foo</p></div>
if ( isTextCt( previous ) || isTextCt( next, 1 ) )
return true;
// Empty block/inline element is also affected. <span>^</span>, <p>^</p> (#7222)
if ( !( previous || next ) && !( ct.type == CKEDITOR.NODE_ELEMENT && ct.isBlockBoundary() && ct.getBogus() ) )
return true;
return false;
}
function createFillingChar( element ) {
removeFillingChar( element, false );
var fillingChar = element.getDocument().createText( '\u200B' );
element.setCustomData( 'cke-fillingChar', fillingChar );
return fillingChar;
}
function getFillingChar( element ) {
return element.getCustomData( 'cke-fillingChar' );
}
// Checks if a filling char has been used, eventualy removing it (#1272).
function checkFillingChar( element ) {
var fillingChar = getFillingChar( element );
if ( fillingChar ) {
// Use this flag to avoid removing the filling char right after
// creating it.
if ( fillingChar.getCustomData( 'ready' ) )
removeFillingChar( element );
else
fillingChar.setCustomData( 'ready', 1 );
}
}
function removeFillingChar( element, keepSelection ) {
var fillingChar = element && element.removeCustomData( 'cke-fillingChar' );
if ( fillingChar ) {
// Text selection position might get mangled by
// subsequent dom modification, save it now for restoring. (#8617)
if ( keepSelection !== false )
{
var bm,
doc = element.getDocument(),
sel = doc.getSelection().getNative(),
// Be error proof.
range = sel && sel.type != 'None' && sel.getRangeAt( 0 );
if ( fillingChar.getLength() > 1 && range && range.intersectsNode( fillingChar.$ ) ) {
bm = [ sel.anchorOffset, sel.focusOffset ];
// Anticipate the offset change brought by the removed char.
var startAffected = sel.anchorNode == fillingChar.$ && sel.anchorOffset > 0,
endAffected = sel.focusNode == fillingChar.$ && sel.focusOffset > 0;
startAffected && bm[ 0 ]--;
endAffected && bm[ 1 ]--;
// Revert the bookmark order on reverse selection.
isReversedSelection( sel ) && bm.unshift( bm.pop() );
}
}
// We can't simply remove the filling node because the user
// will actually enlarge it when typing, so we just remove the
// invisible char from it.
fillingChar.setText( replaceFillingChar( fillingChar.getText() ) );
// Restore the bookmark.
if ( bm ) {
var rng = sel.getRangeAt( 0 );
rng.setStart( rng.startContainer, bm[ 0 ] );
rng.setEnd( rng.startContainer, bm[ 1 ] );
sel.removeAllRanges();
sel.addRange( rng );
}
}
}
function replaceFillingChar( html ) {
return html.replace( /\u200B( )?/g, function( match ) {
// #10291 if filling char is followed by a space replace it with nbsp.
return match[ 1 ] ? '\xa0' : '';
} );
}
function isReversedSelection( sel ) {
if ( !sel.isCollapsed ) {
var range = sel.getRangeAt( 0 );
// Potentially alter an reversed selection range.
range.setStart( sel.anchorNode, sel.anchorOffset );
range.setEnd( sel.focusNode, sel.focusOffset );
return range.collapsed;
}
}
// Read the comments in selection constructor.
function fixInitialSelection( root, nativeSel, doFocus ) {
// It may happen that setting proper selection will
// cause focus to be fired (even without actually focusing root).
// Cancel it because focus shouldn't be fired when retriving selection. (#10115)
var listener = root.on( 'focus', function( evt ) {
evt.cancel();
}, null, null, -100 );
// FF && Webkit.
if ( !CKEDITOR.env.ie ) {
var range = new CKEDITOR.dom.range( root );
range.moveToElementEditStart( root );
var nativeRange = root.getDocument().$.createRange();
nativeRange.setStart( range.startContainer.$, range.startOffset );
nativeRange.collapse( 1 );
nativeSel.removeAllRanges();
nativeSel.addRange( nativeRange );
}
else {
// IE in specific case may also fire selectionchange.
// We cannot block bubbling selectionchange, so at least we
// can prevent from falling into inf recursion caused by fix for #9699
// (see wysiwygarea plugin).
// http://dev.ckeditor.com/ticket/10438#comment:13
var listener2 = root.getDocument().on( 'selectionchange', function( evt ) {
evt.cancel();
}, null, null, -100 );
}
doFocus && root.focus();
listener.removeListener();
listener2 && listener2.removeListener();
}
// Creates cke_hidden_sel container and puts real selection there.
function hideSelection( editor ) {
var style = CKEDITOR.env.ie ? 'display:none' : 'position:fixed;top:0;left:-1000px',
hiddenEl = CKEDITOR.dom.element.createFromHtml(
'<div data-cke-hidden-sel="1" data-cke-temp="1" style="' + style + '"> </div>',
editor.document );
editor.fire( 'lockSnapshot' );
editor.editable().append( hiddenEl );
// Always use real selection to avoid overriding locked one (http://dev.ckeditor.com/ticket/11104#comment:13).
var sel = editor.getSelection( 1 ),
range = editor.createRange(),
// Cancel selectionchange fired by selectRanges - prevent from firing selectionChange.
listener = sel.root.on( 'selectionchange', function( evt ) {
evt.cancel();
}, null, null, 0 );
range.setStartAt( hiddenEl, CKEDITOR.POSITION_AFTER_START );
range.setEndAt( hiddenEl, CKEDITOR.POSITION_BEFORE_END );
sel.selectRanges( [ range ] );
listener.removeListener();
editor.fire( 'unlockSnapshot' );
// Set this value at the end, so reset() executed by selectRanges()
// will clean up old hidden selection container.
editor._.hiddenSelectionContainer = hiddenEl;
}
function removeHiddenSelectionContainer( editor ) {
var hiddenEl = editor._.hiddenSelectionContainer;
if ( hiddenEl ) {
editor.fire( 'lockSnapshot' );
hiddenEl.remove();
editor.fire( 'unlockSnapshot' );
}
delete editor._.hiddenSelectionContainer;
}
// Object containing keystroke handlers for fake selection.
var fakeSelectionDefaultKeystrokeHandlers = ( function() {
function leave( right ) {
return function( evt ) {
var range = evt.editor.createRange();
// Move selection only if there's a editable place for it.
// It no, then do nothing (keystroke will be blocked, widget selection kept).
if ( range.moveToClosestEditablePosition( evt.selected, right ) )
evt.editor.getSelection().selectRanges( [ range ] );
// Prevent default.
return false;
};
}
function del( right ) {
return function( evt ) {
var editor = evt.editor,
range = editor.createRange(),
found;
// If haven't found place for caret on the default side,
// try to find it on the other side.
if ( !( found = range.moveToClosestEditablePosition( evt.selected, right ) ) )
found = range.moveToClosestEditablePosition( evt.selected, !right );
if ( found )
editor.getSelection().selectRanges( [ range ] );
// Save the state before removing selected element.
editor.fire( 'saveSnapshot' );
evt.selected.remove();
// Haven't found any editable space before removing element,
// try to place the caret anywhere (most likely, in empty editable).
if ( !found ) {
range.moveToElementEditablePosition( editor.editable() );
editor.getSelection().selectRanges( [ range ] );
}
editor.fire( 'saveSnapshot' );
// Prevent default.
return false;
};
}
var leaveLeft = leave(),
leaveRight = leave( 1 );
return {
37: leaveLeft, // LEFT
38: leaveLeft, // UP
39: leaveRight, // RIGHT
40: leaveRight, // DOWN
8: del(), // BACKSPACE
46: del( 1 ) // DELETE
};
} )();
// Handle left, right, delete and backspace keystrokes next to non-editable elements
// by faking selection on them.
function getOnKeyDownListener( editor ) {
var keystrokes = { 37: 1, 39: 1, 8: 1, 46: 1 };
return function( evt ) {
var keystroke = evt.data.getKeystroke();
// Handle only left/right/del/bspace keys.
if ( !keystrokes[ keystroke ] )
return;
var sel = editor.getSelection(),
ranges = sel.getRanges(),
range = ranges[ 0 ];
// Handle only single range and it has to be collapsed.
if ( ranges.length != 1 || !range.collapsed )
return;
var next = range[ keystroke < 38 ? 'getPreviousEditableNode' : 'getNextEditableNode' ]();
if ( next && next.type == CKEDITOR.NODE_ELEMENT && next.getAttribute( 'contenteditable' ) == 'false' ) {
editor.getSelection().fake( next );
evt.data.preventDefault();
evt.cancel();
}
};
}
// If fake selection should be applied this function will return instance of
// CKEDITOR.dom.element which should gain fake selection.
function getNonEditableFakeSelectionReceiver( ranges ) {
var enclosedNode, shrinkedNode, clone, range;
if ( ranges.length == 1 && !( range = ranges[ 0 ] ).collapsed &&
( enclosedNode = range.getEnclosedNode() ) && enclosedNode.type == CKEDITOR.NODE_ELEMENT ) {
// So far we can't say that enclosed element is non-editable. Before checking,
// we'll shrink range (clone). Shrinking will stop on non-editable range, or
// innermost element (#11114).
clone = range.clone();
clone.shrink( CKEDITOR.SHRINK_ELEMENT, true );
// If shrinked range still encloses an element, check this one (shrink stops only on non-editable elements).
if ( ( shrinkedNode = clone.getEnclosedNode() ) && shrinkedNode.type == CKEDITOR.NODE_ELEMENT )
enclosedNode = shrinkedNode;
if ( enclosedNode.getAttribute( 'contenteditable' ) == 'false' )
return enclosedNode;
}
}
// Fix ranges which may end after hidden selection container.
// Note: this function may only be used if hidden selection container
// is not in DOM any more.
function fixRangesAfterHiddenSelectionContainer( ranges, root ) {
var range;
for ( var i = 0; i < ranges.length; ++i ) {
range = ranges[ i ];
if ( range.endContainer.equals( root ) ) {
// We can use getChildCount() because hidden selection container is not in DOM.
range.endOffset = Math.min( range.endOffset, root.getChildCount() );
}
}
}
// Extract only editable part or ranges.
// Note: this function modifies ranges list!
// @param {CKEDITOR.dom.rangeList} ranges
function extractEditableRanges( ranges ) {
for ( var i = 0; i < ranges.length; i++ ) {
var range = ranges[ i ];
// Drop range spans inside one ready-only node.
var parent = range.getCommonAncestor();
if ( parent.isReadOnly() )
ranges.splice( i, 1 );
if ( range.collapsed )
continue;
// Range may start inside a non-editable element,
// replace the range start after it.
if ( range.startContainer.isReadOnly() ) {
var current = range.startContainer,
isElement;
while ( current ) {
isElement = current.type == CKEDITOR.NODE_ELEMENT;
if ( ( isElement && current.is( 'body' ) ) || !current.isReadOnly() )
break;
if ( isElement && current.getAttribute( 'contentEditable' ) == 'false' )
range.setStartAfter( current );
current = current.getParent();
}
}
var startContainer = range.startContainer,
endContainer = range.endContainer,
startOffset = range.startOffset,
endOffset = range.endOffset,
walkerRange = range.clone();
// Enlarge range start/end with text node to avoid walker
// being DOM destructive, it doesn't interfere our checking
// of elements below as well.
if ( startContainer && startContainer.type == CKEDITOR.NODE_TEXT ) {
if ( startOffset >= startContainer.getLength() )
walkerRange.setStartAfter( startContainer );
else
walkerRange.setStartBefore( startContainer );
}
if ( endContainer && endContainer.type == CKEDITOR.NODE_TEXT ) {
if ( !endOffset )
walkerRange.setEndBefore( endContainer );
else
walkerRange.setEndAfter( endContainer );
}
// Looking for non-editable element inside the range.
var walker = new CKEDITOR.dom.walker( walkerRange );
walker.evaluator = function( node ) {
if ( node.type == CKEDITOR.NODE_ELEMENT && node.isReadOnly() ) {
var newRange = range.clone();
range.setEndBefore( node );
// Drop collapsed range around read-only elements,
// it make sure the range list empty when selecting
// only non-editable elements.
if ( range.collapsed )
ranges.splice( i--, 1 );
// Avoid creating invalid range.
if ( !( node.getPosition( walkerRange.endContainer ) & CKEDITOR.POSITION_CONTAINS ) ) {
newRange.setStartAfter( node );
if ( !newRange.collapsed )
ranges.splice( i + 1, 0, newRange );
}
return true;
}
return false;
};
walker.next();
}
return ranges;
}
// Setup all editor instances for the necessary selection hooks.
CKEDITOR.on( 'instanceCreated', function( ev ) {
var editor = ev.editor;
editor.on( 'contentDom', function() {
var doc = editor.document,
outerDoc = CKEDITOR.document,
editable = editor.editable(),
body = doc.getBody(),
html = doc.getDocumentElement();
var isInline = editable.isInline();
var restoreSel,
lastSel;
// Give the editable an initial selection on first focus,
// put selection at a consistent position at the start
// of the contents. (#9507)
if ( CKEDITOR.env.gecko ) {
editable.attachListener( editable, 'focus', function( evt ) {
evt.removeListener();
if ( restoreSel !== 0 ) {
var nativ = editor.getSelection().getNative();
// Do it only if the native selection is at an unwanted
// place (at the very start of the editable). #10119
if ( nativ && nativ.isCollapsed && nativ.anchorNode == editable.$ ) {
var rng = editor.createRange();
rng.moveToElementEditStart( editable );
rng.select();
}
}
}, null, null, -2 );
}
// Plays the magic here to restore/save dom selection on editable focus/blur.
editable.attachListener( editable, CKEDITOR.env.webkit ? 'DOMFocusIn' : 'focus', function() {
// On Webkit we use DOMFocusIn which is fired more often than focus - e.g. when moving from main editable
// to nested editable (or the opposite). Unlock selection all, but restore only when it was locked
// for the same active element, what will e.g. mean restoring after displaying dialog.
if ( restoreSel && CKEDITOR.env.webkit )
restoreSel = editor._.previousActive && editor._.previousActive.equals( doc.getActive() );
editor.unlockSelection( restoreSel );
restoreSel = 0;
}, null, null, -1 );
// Disable selection restoring when clicking in.
editable.attachListener( editable, 'mousedown', function() {
restoreSel = 0;
} );
// Browsers could loose the selection once the editable lost focus,
// in such case we need to reproduce it by saving a locked selection
// and restoring it upon focus gain.
if ( CKEDITOR.env.ie || CKEDITOR.env.opera || isInline ) {
// Save a cloned version of current selection.
function saveSel() {
lastSel = new CKEDITOR.dom.selection( editor.getSelection() );
lastSel.lock();
}
// For old IEs, we can retrieve the last correct DOM selection upon the "beforedeactivate" event.
// For the rest, a more frequent check is required for each selection change made.
if ( isMSSelection )
editable.attachListener( editable, 'beforedeactivate', saveSel, null, null, -1 );
else
editable.attachListener( editor, 'selectionCheck', saveSel, null, null, -1 );
// Lock the selection and mark it to be restored.
// On Webkit we use DOMFocusOut which is fired more often than blur. I.e. it will also be
// fired when nested editable is blurred.
editable.attachListener( editable, CKEDITOR.env.webkit ? 'DOMFocusOut' : 'blur', function() {
editor.lockSelection( lastSel );
restoreSel = 1;
}, null, null, -1 );
// Disable selection restoring when clicking in.
editable.attachListener( editable, 'mousedown', function() {
restoreSel = 0;
} );
}
// The following selection related fixes applies to only framed editable.
if ( CKEDITOR.env.ie && !isInline ) {
var scroll;
editable.attachListener( editable, 'mousedown', function( evt ) {
// IE scrolls document to top on right mousedown
// when editor has no focus, remember this scroll
// position and revert it before context menu opens. (#5778)
if ( evt.data.$.button == 2 ) {
var sel = editor.document.getSelection();
if ( !sel || sel.getType() == CKEDITOR.SELECTION_NONE )
scroll = editor.window.getScrollPosition();
}
} );
editable.attachListener( editable, 'mouseup', function( evt ) {
// Restore recorded scroll position when needed on right mouseup.
if ( evt.data.$.button == 2 && scroll ) {
editor.document.$.documentElement.scrollLeft = scroll.x;
editor.document.$.documentElement.scrollTop = scroll.y;
}
scroll = null;
} );
// When content doc is in standards mode, IE doesn't focus the editor when
// clicking at the region below body (on html element) content, we emulate
// the normal behavior on old IEs. (#1659, #7932)
if ( doc.$.compatMode != 'BackCompat' ) {
if ( CKEDITOR.env.ie7Compat || CKEDITOR.env.ie6Compat ) {
function moveRangeToPoint( range, x, y ) {
// Error prune in IE7. (#9034, #9110)
try { range.moveToPoint( x, y ); } catch ( e ) {}
}
html.on( 'mousedown', function( evt ) {
evt = evt.data;
// Expand the text range along with mouse move.
function onHover( evt ) {
evt = evt.data.$;
if ( textRng ) {
// Read the current cursor.
var rngEnd = body.$.createTextRange();
moveRangeToPoint( rngEnd, evt.x, evt.y );
// Handle drag directions.
textRng.setEndPoint(
startRng.compareEndPoints( 'StartToStart', rngEnd ) < 0 ?
'EndToEnd' : 'StartToStart', rngEnd );
// Update selection with new range.
textRng.select();
}
}
function removeListeners() {
outerDoc.removeListener( 'mouseup', onSelectEnd );
html.removeListener( 'mouseup', onSelectEnd );
}
function onSelectEnd() {
html.removeListener( 'mousemove', onHover );
removeListeners();
// Make it in effect on mouse up. (#9022)
textRng.select();
}
// We're sure that the click happens at the region
// below body, but not on scrollbar.
if ( evt.getTarget().is( 'html' ) &&
evt.$.y < html.$.clientHeight &&
evt.$.x < html.$.clientWidth ) {
// Start to build the text range.
var textRng = body.$.createTextRange();
moveRangeToPoint( textRng, evt.$.x, evt.$.y );
// Records the dragging start of the above text range.
var startRng = textRng.duplicate();
html.on( 'mousemove', onHover );
outerDoc.on( 'mouseup', onSelectEnd );
html.on( 'mouseup', onSelectEnd );
}
} );
}
// It's much simpler for IE8+, we just need to reselect the reported range.
// This hack does not work on IE>=11 because there's no old selection&range APIs.
if ( CKEDITOR.env.version > 7 && CKEDITOR.env.version < 11 ) {
html.on( 'mousedown', function( evt ) {
if ( evt.data.getTarget().is( 'html' ) ) {
// Limit the text selection mouse move inside of editable. (#9715)
outerDoc.on( 'mouseup', onSelectEnd );
html.on( 'mouseup', onSelectEnd );
}
} );
function removeListeners() {
outerDoc.removeListener( 'mouseup', onSelectEnd );
html.removeListener( 'mouseup', onSelectEnd );
}
function onSelectEnd() {
removeListeners();
// The event is not fired when clicking on the scrollbars,
// so we can safely check the following to understand
// whether the empty space following <body> has been clicked.
var sel = CKEDITOR.document.$.selection,
range = sel.createRange();
// The selection range is reported on host, but actually it should applies to the content doc.
if ( sel.type != 'None' && range.parentElement().ownerDocument == doc.$ )
range.select();
}
}
}
}
// We check the selection change:
// 1. Upon "selectionchange" event from the editable element. (which might be faked event fired by our code)
// 2. After the accomplish of keyboard and mouse events.
editable.attachListener( editable, 'selectionchange', checkSelectionChange, editor );
editable.attachListener( editable, 'keyup', checkSelectionChangeTimeout, editor );
// Always fire the selection change on focus gain.
// On Webkit do this on DOMFocusIn, because the selection is unlocked on it too and
// we need synchronization between those listeners to not lost cached editor._.previousActive property
// (which is updated on selectionCheck).
editable.attachListener( editable, CKEDITOR.env.webkit ? 'DOMFocusIn' : 'focus', function() {
editor.forceNextSelectionCheck();
editor.selectionChange( 1 );
} );
// #9699: On Webkit&Gecko in inline editor and on Opera in framed editor we have to check selection
// when it was changed by dragging and releasing mouse button outside editable. Dragging (mousedown)
// has to be initialized in editable, but for mouseup we listen on document element.
// On Opera, listening on document element, helps even if mouse button is released outside iframe.
if ( isInline ? ( CKEDITOR.env.webkit || CKEDITOR.env.gecko ) : CKEDITOR.env.opera ) {
var mouseDown;
editable.attachListener( editable, 'mousedown', function() {
mouseDown = 1;
} );
editable.attachListener( doc.getDocumentElement(), 'mouseup', function() {
if ( mouseDown )
checkSelectionChangeTimeout.call( editor );
mouseDown = 0;
} );
}
// In all other cases listen on simple mouseup over editable, as we did before #9699.
//
// Use document instead of editable in non-IEs for observing mouseup
// since editable won't fire the event if selection process started within iframe and ended out
// of the editor (#9851).
else
editable.attachListener( CKEDITOR.env.ie ? editable : doc.getDocumentElement(), 'mouseup', checkSelectionChangeTimeout, editor );
if ( CKEDITOR.env.webkit ) {
// Before keystroke is handled by editor, check to remove the filling char.
editable.attachListener( doc, 'keydown', function( evt ) {
var key = evt.data.getKey();
// Remove the filling char before some keys get
// executed, so they'll not get blocked by it.
switch ( key ) {
case 13: // ENTER
case 33: // PAGEUP
case 34: // PAGEDOWN
case 35: // HOME
case 36: // END
case 37: // LEFT-ARROW
case 39: // RIGHT-ARROW
case 8: // BACKSPACE
case 45: // INS
case 46: // DEl
removeFillingChar( editable );
}
}, null, null, -1 );
}
// Automatically select non-editable element when navigating into
// it by left/right or backspace/del keys.
editable.attachListener( editable, 'keydown', getOnKeyDownListener( editor ), null, null, -1 );
} );
// Clear the cached range path before unload. (#7174)
editor.on( 'contentDomUnload', editor.forceNextSelectionCheck, editor );
// Check selection change on data reload.
editor.on( 'dataReady', function() {
// Clean up fake selection after setting data.
delete editor._.fakeSelection;
delete editor._.hiddenSelectionContainer;
editor.selectionChange( 1 );
} );
// When loaded data are ready check whether hidden selection container was not loaded.
editor.on( 'loadSnapshot', function() {
// TODO replace with el.find() which will be introduced in #9764,
// because it may happen that hidden sel container won't be the last element.
var el = editor.editable().getLast( function( node ) {
return node.type == CKEDITOR.NODE_ELEMENT;
} );
if ( el && el.hasAttribute( 'data-cke-hidden-sel' ) )
el.remove();
}, null, null, 100 );
function clearSelection() {
var sel = editor.getSelection();
sel && sel.removeAllRanges();
}
// Clear dom selection before editable destroying to fix some browser
// craziness.
// IE9 might cease to work if there's an object selection inside the iframe (#7639).
CKEDITOR.env.ie9Compat && editor.on( 'beforeDestroy', clearSelection, null, null, 9 );
// Webkit's selection will mess up after the data loading.
CKEDITOR.env.webkit && editor.on( 'setData', clearSelection );
// Invalidate locked selection when unloading DOM (e.g. after setData). (#9521)
editor.on( 'contentDomUnload', function() {
editor.unlockSelection();
} );
editor.on( 'key', function( evt ) {
if ( editor.mode != 'wysiwyg' )
return;
var sel = editor.getSelection();
if ( !sel.isFake )
return;
var handler = fakeSelectionDefaultKeystrokeHandlers[ evt.data.keyCode ];
if ( handler )
return handler( { editor: editor, selected: sel.getSelectedElement(), selection: sel, keyEvent: evt } );
} );
} );
CKEDITOR.on( 'instanceReady', function( evt ) {
var editor = evt.editor;
// On WebKit only, we need a special "filling" char on some situations
// (#1272). Here we set the events that should invalidate that char.
if ( CKEDITOR.env.webkit ) {
editor.on( 'selectionChange', function() {
checkFillingChar( editor.editable() );
}, null, null, -1 );
editor.on( 'beforeSetMode', function() {
removeFillingChar( editor.editable() );
}, null, null, -1 );
var fillingCharBefore, resetSelection;
function beforeData() {
var editable = editor.editable();
if ( !editable )
return;
var fillingChar = getFillingChar( editable );
if ( fillingChar ) {
// If cursor is right blinking by side of the filler node, save it for restoring,
// as the following text substitution will blind it. (#7437)
var sel = editor.document.$.defaultView.getSelection();
if ( sel.type == 'Caret' && sel.anchorNode == fillingChar.$ )
resetSelection = 1;
fillingCharBefore = fillingChar.getText();
fillingChar.setText( replaceFillingChar( fillingCharBefore ) );
}
}
function afterData() {
var editable = editor.editable();
if ( !editable )
return;
var fillingChar = getFillingChar( editable );
if ( fillingChar ) {
fillingChar.setText( fillingCharBefore );
if ( resetSelection ) {
editor.document.$.defaultView.getSelection().setPosition( fillingChar.$, fillingChar.getLength() );
resetSelection = 0;
}
}
}
editor.on( 'beforeUndoImage', beforeData );
editor.on( 'afterUndoImage', afterData );
editor.on( 'beforeGetData', beforeData, null, null, 0 );
editor.on( 'getData', afterData );
}
} );
/**
* Check the selection change in editor and potentially fires
* the {@link CKEDITOR.editor#event-selectionChange} event.
*
* @method
* @member CKEDITOR.editor
* @param {Boolean} [checkNow=false] Force the check to happen immediately
* instead of coming with a timeout delay (default).
*/
CKEDITOR.editor.prototype.selectionChange = function( checkNow ) {
( checkNow ? checkSelectionChange : checkSelectionChangeTimeout ).call( this );
};
/**
* Retrieve the editor selection in scope of editable element.
*
* **Note:** Since the native browser selection provides only one single
* selection at a time per document, so if editor's editable element has lost focus,
* this method will return a null value unless the {@link CKEDITOR.editor#lockSelection}
* has been called beforehand so the saved selection is retrieved.
*
* var selection = CKEDITOR.instances.editor1.getSelection();
* alert( selection.getType() );
*
* @method
* @member CKEDITOR.editor
* @param {Boolean} forceRealSelection Return real selection, instead of saved or fake one.
* @returns {CKEDITOR.dom.selection} A selection object or null if not available for the moment.
*/
CKEDITOR.editor.prototype.getSelection = function( forceRealSelection ) {
// Check if there exists a locked or fake selection.
if ( ( this._.savedSelection || this._.fakeSelection ) && !forceRealSelection )
return this._.savedSelection || this._.fakeSelection;
// Editable element might be absent or editor might not be in a wysiwyg mode.
var editable = this.editable();
return editable && this.mode == 'wysiwyg' ? new CKEDITOR.dom.selection( editable ) : null;
};
/**
* Locks the selection made in the editor in order to make it possible to
* manipulate it without browser interference. A locked selection is
* cached and remains unchanged until it is released with the
* {@link CKEDITOR.editor#unlockSelection} method.
*
* @method
* @member CKEDITOR.editor
* @param {CKEDITOR.dom.selection} [sel] Specify the selection to be locked.
* @returns {Boolean} `true` if selection was locked.
*/
CKEDITOR.editor.prototype.lockSelection = function( sel ) {
sel = sel || this.getSelection( 1 );
if ( sel.getType() != CKEDITOR.SELECTION_NONE ) {
!sel.isLocked && sel.lock();
this._.savedSelection = sel;
return true;
}
return false;
};
/**
* Unlocks the selection made in the editor and locked with the
* {@link CKEDITOR.editor#unlockSelection} method. An unlocked selection
* is no longer cached and can be changed.
*
* @method
* @member CKEDITOR.editor
* @param {Boolean} [restore] If set to `true`, the selection is
* restored back to the selection saved earlier by using the
* {@link CKEDITOR.dom.selection#lock} method.
*/
CKEDITOR.editor.prototype.unlockSelection = function( restore ) {
var sel = this._.savedSelection;
if ( sel ) {
sel.unlock( restore );
delete this._.savedSelection;
return true;
}
return false;
};
/**
* @method
* @member CKEDITOR.editor
* @todo
*/
CKEDITOR.editor.prototype.forceNextSelectionCheck = function() {
delete this._.selectionPreviousPath;
};
/**
* Gets the current selection in context of the document's body element.
*
* var selection = CKEDITOR.instances.editor1.document.getSelection();
* alert( selection.getType() );
*
* @method
* @member CKEDITOR.dom.document
* @returns {CKEDITOR.dom.selection} A selection object.
*/
CKEDITOR.dom.document.prototype.getSelection = function() {
return new CKEDITOR.dom.selection( this );
};
/**
* Select this range as the only one with {@link CKEDITOR.dom.selection#selectRanges}.
*
* @method
* @returns {CKEDITOR.dom.selection}
* @member CKEDITOR.dom.range